VS 2010 Get Form To Display Before Running Function?
Sep 29, 2011
Currently the process is in VBS, however this means there is no real interface.I attempted to get this into HTA, but this doesn't work to well due to known issues - the interface doesn't update with information until the end of the code (functions) are executed.So I thought I would create a VB program to do the work.Ideally, I would have a form load, and once loaded the functions (which map drives accordingly) will display the results on the screen.My code should be pretty sound - it is working - but it seems to be invoking BEFORE the form is displayed.I have tried various subroutines, such as Form1_Load, Form1_Activate, Form1_Shown, but all of these execute the code before the form has loaded and is displayed on the screen.As a test, I have
Private Sub Form1_Shown(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
lbl_Head01.Text = "HELLO WORLD"
[code].....
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Oct 11, 2009
Is it possible to run a function or to execute a button just after the form was loaded? I mean to execute it just as the form_load subroutine has ended, so the form is already being displayed.
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Jan 19, 2010
In my .NET porject, I have to run a lot of validation on 4/5 fields. This validation checks if certain fields have errors, for example: the name field is not allowed to have numbers or symbols. If all these checks are passed, I need to execute a SQL query to pull some data out of the database. I could have it with a lot of nested IFs, and run the function at the end once it passes them all, but this will translate into about 12 nested IFs, and it seems a really bulky way to do it. I have also thought about setting a boolean value after every check, and if the value is 1 then don't run the function, else do. But of course this gets overwritten by other checks that pass.
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Jan 28, 2010
I have a form set up where I want to run the function PopulateGrid on it's Form_Load event. I have initialized the DB connection as follows:
Private Sub Main_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
LoadConfigFile()
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & config("DatabasePath") & ";")
cn.Open()
End Sub
Now, I want to run the PopulateGrid function directly after I connect to the database as shown above. I'm confused as to how I'd use a database query in a module when the database is initialized in my main form. Would simple setting the variable cn to public work?
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Jul 24, 2008
I have only recently started using VB.NET after having a little experience in VB6. I am trying hard to force myself into this OOP mindset. I want to know if a certain thing is possible.
I want to be able to call a function in the beginning of my main form's startup sub. The function call would look something like this.
Code:
Private Sub frmMain_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim Username, Password, NewPassword as String
[Code].....
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Oct 27, 2010
If I have an flv file how can I display the flv to play inside 2010? I tried the web browser function which will display a function like loading the page, but I am only interested in playing the file itself, is there a way to load a specific player that will load the flv file?
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Sep 27, 2010
Inside a form, I would like to display a pdf file which is already available in my resources (template file "untitled"). In this pdf file, I have some fields which get their values from some texboxes in another form. My aim is, when the user triggers the button to call this form, it should insert the values inside the pdf file and display the output pdf inside the form.I have written the code to an extend but could not finish it myself after my many trials... Now here are the two things I cannot manage:I can use a directory to read the template pdf "untitled1.pdf". But my aim is to use the file inside my resources. can save the output file in a directory but this is not I want to do. I want to display the output pdf.
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Mar 15, 2012
Is it possible to reload a form of the running application from one computer when I executed a function from my other computer with the same application? co'z I want to see the changes of data on my datagrid view?
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Oct 1, 2010
I have a form, that i use a timer control, to update a lable ever tick, however nothing seems to happen when i start my form.
Private Sub update_clock(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
LinkLabel3.Text = Date.Now
End Sub
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Jun 12, 2012
I have an app where there's an edit form and it loads a bunch of stuff into comboboxes which takes half a minute to load the first time. Once it's loaded I keep the instance of the form and just hide it instead of disposing it until the app exits. What I would like to do is in the Sub Main of the app (there is no startup form) I would like to launch a new thread and load that form into memory, but I don't want the form to be displayed at that time, what's the best way to do this?
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Mar 5, 2012
I have a text box in form1 that displays the total, I want to carry this over to form 2 into another text box as I navigate between them, how would I do this? Also I have a button on form2 to return to form1 but I need all the data that has been input by the end user to be cleared from both forms when returning, again how would this be completed?
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Jun 14, 2011
I'm using VB 2010, accessing a MS Access database. I have constructed a simple Windows Form returning data from the db, one field of which has a reference to an image I'm trying to display together with the data from each individual record.
I have a field with a product number, that matches the jpg file name (ie, the product number 5505 matches an image that I want to display, namely 5505.jpg). I've even created a new field in the db called 'Image', that contains the full name 5505.jpg.
So, I've connected to the db with an OleDbAdapter, and all the data fields are displayed via bound textboxes. I've been able to display a single 'set' image with a PictureBox, but I'm not sure how the make the connection between the returned data (txtSearchImage which is, say, '5505.jpg'), and getting the Windows Form to display this.
Am I on the right track using a PictureBox? I've tried binding this via the PictureBox properties to the relevant data field, but (obviously) it doesn't make the connection to the image file on my hard drive.
Here's my code so far:
Public Class Form1
Private Sub btnSearchKits_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearchKits.Click
' The following line passes the value the user enter for state
[Code].....
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Oct 30, 2010
I have an excel file that analizes the info on a SQL database. we have generated a few charts and now I want to be able to display them on a form in VB 2010I searched the web for info but the solutions I've found do not work and my guess is because they are for earlier versions of VB.I have been able to read or even write to the worksheet using this but on the graphvb.net
Dim oExcel As Object = CreateObject("Excel.Application")
Dim oBook As Object = oExcel.Workbooks.Open("C: est.xlsx")
Dim oSheet As Object = oBook.Worksheets(1)
[code]....
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Oct 2, 2010
How can i display a certain region/selection (rectangular) from an excel file into a form.
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Jul 5, 2010
the application I'm building is ALMOST done. The ONLY final feature I NEED to add is the ability to receive email. Now I'm using VB 2010. How would I go about doing this? Would I use 2 listboxes and a form with labels on it to display the message. I haven't any code yet. How in the world do I do this??
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Jun 14, 2012
I have the following code:
[code...]
May I know how can I put a progress bar to make it keep running when the function FnProcessApproval() is running and stop when the messagebox is display?
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Dec 22, 2011
I'm working on an updater for my applications. I'm using VB .NET 2005. So, when I push the button called "Download" it runs twice and does the following: Download the file (~20mb). When the file is downloaded then it does again the same overwriting the first file. I used the following to make the download possible:
[Code]...
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Dec 2, 2011
I've created a form with several controls to specify the inputs to my program. They include TextBox, OpenFileDialog, Button and even a user control for numeric input. When the user clicks the 'GO' button, the program begins it work. Opening several files and processing a bunch of numerical data. This could take many minutes/hours with large datasets.
What I've been trying to do is have another window/form open up and send status information to it for the user to view. The info to be displayed is varied and constantly updated as the program crunches the numbers. Many many programs do just this type of activity.
I attempted to create a second form with a huge TextBox thinking I'd just write stuff to it. I called the .show method within the .click of the 'GO' button and of course the form is displayed but control of the program's execution doesn't return until the form is closed. How to I maintain execution and have a second window/form to display status?
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Feb 8, 2012
i face a problem in checking file condition.I wish to create a program that can check the condition file continuously while the program is running.[code]If I suddenly remove the file, it cant show a message File not Exist or if I suddenly receive a file and place at the folder,it cant show me a message File already Exist.How can I modify my code to continuously checking the file condition while the program is running.
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Mar 31, 2011
when trying to run a function in a separate thread, my reason for trying this is because since the application is only run on one thread, the GUI hangs when the function is called.[code]In this code, the Print screen Button is pressed and the function HookCallBack is called.The problem is that the function has variables that need to be passed and returned, and while searching, i found a website that had an answer for this, and it required the function to be put in a class, and then it could be run on a separate thread while still passing all the variables needed.url...But the code cannot be placed in a class without giving errors and it seems to me like i did something wrong. The code is meant to be used in a form and not a class.My question is, how would i go about running the HookCallBack Function in a Separate thread?
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Feb 12, 2010
How do i keep an animated gif running while my app is running a sub.The whole UI is blocked so I've tried displaying it in another form but i get the same result.
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Dec 27, 2011
I am Using same function from many places...for example below function
Public Sub getUser(ByVal Name as string)
dim myName=Name
.......
insert(myName)
End Sub
I am using this function from so many places...I have doubt should this function override this myName values with latest function call?Suppose i called getUser("ABC") so value of myName is now ABC now sudden all call getUser("XYZ") so at insert(myName) will it insert("ABC") or insert("XYZ")??I need it to be insert("ABC") and then insert("XYZ")
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Dec 2, 2007
I'm teaching myself vb.net. For my first project I am making a md5 dictionary attack tool.I know that there are alot of them but I figured it would be a good way for me to start out.Right now I'm looking for other methods of running the words through a function that I have created.
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Nov 18, 2011
I want to display the Progress bar control in my vb.net application until my procedure runs at the backend.
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Aug 8, 2011
I have a self made program (visual Studio 2010 VB) that is running OK but.when i write data to a listbox the output in the listbox appears after the code is finischeded running.
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May 25, 2012
I am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:
typedef void *HANDLE;
typedef HANDLE HACQDESC;
DECLARE_HANDLE (HWND);
[code]....
how to convert this DLL call to VB.NET and also how to create the callback function and send it as parameter to this function
call.
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Jul 5, 2011
I have created an application using visual studio 2008. The application is to copy the data from one excel file and paste to another excel file. The problem happen when i try use the copy paste function at the same time in other excel file.(I have opened others excel file before the application start.) I'm noticed the value that i paste is not same from what i copy in the excel file.(the application is running behind and using copy paste function at the same time.) How to hold the value using vb.net when copy from excel for the application so that other copy paste function is not affect it?
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Jun 24, 2009
I have seen numerous sites that provide examples on creating progress bars. I would like to know how to "call" the progress bar (created as UserForm1) to update a completion percentage of records processed from a Main macro in Module 1.
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Aug 27, 2010
I would like to display text in a textbox without having to press enter to show the text. Currently all I am showing is the hostname and ip address of the current computer.
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Dec 17, 2011
In vb.net, I've downloaded ActiveX and able to browse and run a video file. Now, how to run animations or display an image over the video.
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